<template>
  <div class="login_container">
    <div class="login_box">
      <!--头像区-->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="">
      </div>
      <!--登陆表单区-->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
        <!--账号-->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-zhanghu"></el-input>
        </el-form-item>
        <!--密码-->
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password" prefix-icon="iconfont icon-mima"></el-input>
        </el-form-item>
        <!--按钮-->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "login.vue",
  data() {
    return {
      //登陆表单绑定的对象
      loginForm:{
        username:'admin',
        password:'123456',
      },
      //表单的验证规则对象
      loginFormRules:{
        //验证用户名是否合法
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        //验证密码是否合法
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
      }
    },
  methods:{
    //表单重置
    resetLoginForm(){
      //console.log(this)
      this.$refs.loginFormRef.resetFields();
    },
    login() {
      //console.log(this)
      //表单预验证
      this.$refs.loginFormRef.validate(async valid=>{
        // console.log(valid);
        if (!valid)return ;
        //登陆提交
       const {data:res} =await this.$http.post("login",this.loginForm);
       if (res.meta.status!==200)return this.$message.error('登陆失败');
       this.$message.success('登陆成功')
        // 1．将登录成功之后的 token，保存到客户端的sessionStorage中
        // 1.1项目中出了登录之外的其他API接口，必须在登录之后才能访问
        //1.2token只应用在当前网站打开期间有效,所以将token保存在sessionStorage中
        console.log(res);
        window.sessionStorage.setItem("token",res.data.token);
        //2通过编程式导航跳转到后台主页,路由地址是/home
        this.$router.push('/home');

      });
    }
  }
}
</script>

<style lang="less" scoped>
//背景色
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

//登录盒子
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 5px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

//头像区的绘制
.avatar_box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;

  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
